'\" t
.TH "SD_BUS_SET_EXIT_ON_DISCONNECT" "3" "" "systemd 256.7" "sd_bus_set_exit_on_disconnect"
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.SH "NAME"
sd_bus_set_exit_on_disconnect, sd_bus_get_exit_on_disconnect \- Control the exit behavior when the bus object disconnects
.SH "SYNOPSIS"
.sp
.ft B
.nf
#include <systemd/sd\-bus\&.h>
.fi
.ft
.HP \w'int\ sd_bus_set_exit_on_disconnect('u
.BI "int sd_bus_set_exit_on_disconnect(sd_bus\ *" "bus" ", int\ " "b" ");"
.HP \w'int\ sd_bus_get_exit_on_disconnect('u
.BI "int sd_bus_get_exit_on_disconnect(sd_bus\ *" "bus" ");"
.SH "DESCRIPTION"
.PP
\fBsd_bus_set_exit_on_disconnect()\fR
may be used to configure the exit behavior when the given bus object disconnects\&. If
\fIb\fR
is zero, no special logic is executed when the bus object disconnects\&. If
\fIb\fR
is non\-zero, the behavior on disconnect depends on whether the bus object is attached to an event loop or not\&. If the bus object is attached to an event loop (see
\fBsd_bus_attach_event\fR(3)), the event loop is closed when the bus object disconnects (as if calling
\fBsd_event_exit\fR(3))\&. Otherwise,
\fBexit\fR(3)
is called\&. The exit code passed to
\fBsd_event_exit()\fR
and
\fBexit()\fR
is
\fBEXIT_FAILURE\fR\&. If the bus object has already disconnected when enabling the exit behavior, the exit behavior is executed immediately\&. By default, the exit behavior is disabled\&.
.PP
\fBsd_bus_get_exit_on_disconnect()\fR
returns whether the exit on disconnect behavior is enabled for the given bus object\&.
.SH "RETURN VALUE"
.PP
On success,
\fBsd_bus_set_exit_on_disconnect()\fR
returns a non\-negative integer\&. On failure, it returns a negative errno\-style error code\&.
.PP
\fBsd_bus_get_exit_on_disconnect()\fR
returns a positive integer if the exit on disconnect behavior is enabled\&. Otherwise, it returns zero\&.
.SS "Errors"
.PP
Returned errors may indicate the following problems:
.PP
\fB\-EINVAL\fR
.RS 4
A required parameter was
\fBNULL\fR\&.
.sp
Added in version 246\&.
.RE
.PP
\fB\-ENOPKG\fR
.RS 4
The bus object could not be resolved\&.
.sp
Added in version 246\&.
.RE
.PP
\fB\-ECHILD\fR
.RS 4
The bus connection was created in a different process, library or module instance\&.
.sp
Added in version 246\&.
.RE
.SH "NOTES"
.PP
Functions described here are available as a shared library, which can be compiled against and linked to with the
\fBlibsystemd\fR\ \&\fBpkg-config\fR(1)
file\&.
.PP
The code described here uses
\fBgetenv\fR(3), which is declared to be not multi\-thread\-safe\&. This means that the code calling the functions described here must not call
\fBsetenv\fR(3)
from a parallel thread\&. It is recommended to only do calls to
\fBsetenv()\fR
from an early phase of the program when no other threads have been started\&.
.SH "HISTORY"
.PP
\fBsd_bus_set_exit_on_disconnect()\fR
and
\fBsd_bus_get_exit_on_disconnect()\fR
were added in version 246\&.
.SH "SEE ALSO"
.PP
\fBsystemd\fR(1), \fBsd-bus\fR(3), \fBsd_bus_attach_event\fR(3), \fBsd-event\fR(3), \fBsd_event_exit\fR(3)
